Abrading tool



May 20, 1930.

J. E. SIMS 1,759,523

AAAAAAAAAA 0L Patented May 20, 1930 JAMES :a suits, or mm Aim,CALIFORNIA A'Bmnme r001.

Application filed Apt-n 2a,

This invention relates to an abrading tool and is particularly adaptablefor honing piston pin holes and cylinders of internal combustionengines.

An object. of the invention'is to provide, a tool which is adapted to beattached to a rotating source of power and projected into the openingtobe smoothed or may be fixed in a vise and the work rotated thereabout.

Another object ofthe invention is to provide for a rigid abradingsurface that permits convenient arrangement of a detachable abradingseat so that the same may bereplaceable while at the same time modifyingthe parts so as to preventcutting of the abrading sheet. F Other objectsof the invention, areto provide, in a manner as hereinafter set forth, atool of the character referred to, which is strong, compact and durable,very simple in its methodof assembly, convenient to operate, formed ofsimplified thoroughly reliable in its operation and C0111- parativelyinexpensive to manufacture and operate.

With the foregoing and'other objects .in view, the inventionconsists ofa novel construction, combination and arrangement of parts. as will behereinafter more specifically described and illustrated in theaccompanying drawings, wherein is disclosed an embodiment of theinvention, but it is to be understood that changes, variationsandmodifications may be resorted to without departing from the spirit ofthe claims hereunto appended. 1

In the drawings wherein likereference characters denote corresponding part s throughout the several views; I

Figure 1 is an elevation, partly in section of the device in accordancewith this'invention,

Figure 2 is a side elevation of thesleeve thereof, and v 4 Figure 3 is afragmentary diametric sec-' tional view of a portion thereof.

Referring to the drawings in detail, 5 ill-- die-ates an elongatedmandrel cylindrical in cross section having reducedv peripherallythreaded portions 6, 7 at its opposite ends,

parts, which is are supported on the threaded face 1929. Serial No.$57,485.

while the one threaded portion 7 merges into a shank 8 having a squareshoulder9 011 the w free extremity thereof. The shoulder 9 is recited asbeing square, it may be of anycontour depending upon the'configurationof the grippin member to which the tool is adapted to be applied. v

A pair of sockets 10, 11 are countersunk in the periphery of the mandrel'5, extends axiall thereof and are disposed at an angle wit 1 respect tothe diameter of said mandrel. A pair of U-shaped resilient inetallicclips 12'. 13 are adapted to be anchored in the sockets 10, 11 and heldtion of the resilient legs of the clip pressing outwardly against thewalls of the socket.

The friction of the legs however are not enough to prevent the movementof theclip, when it is desired to remove them for the purposes to bepresently referredto.

A substantially rigi split, tubular sleeve circuinposed about andsupported on the mandrel 5. The length of the SlGGW-B 14 however isslightly greaterthan the length of mandrel 5 to form an abutmentengageable with the fastening devices and to be prese1'1t-.

ly referred to. The slot 1 axially disposed and and is disposed at theof'sockcts 10.11.

5 on the sleeve-is is of the same width, same angle'as the pair thereinby the fric Referring to Figure 3 of the drawings, this mandrel rotatesin a clockwise direction and the leading corners of the slot 15 arerounded as at 16 to prevent cutting the abrading sheets, to be presentlymentioned, by abutment with external objects. The walls of the sleeve 14taper gently from the inner end 17 to the outer end 18 so thatparticular spots may be smoothed without exerting pressure on the entireopening being honed.

A'pair of nuts .19, 2O threadably engage and at the opposite ends of themandrel and the inner faces of the nuts are brought into dc- Asheet ofabrading cloth 21 of the length of the sleeve 14 is trained over theouter surportions .6. 7

thereof.- The free ends of the sheet are press or any threaded throughthe slot 15 of the sleeve and secured between the resilient legs of theU-fshaped clips 12, 13, whereupon the abrading cloth 21 is' demountablycircumposed about the sleeve 14. The clips 12, 13 may be removed fromthe sockets 1Q, 11 when the ends of the abrading sheet 21 are-insertedtherein and after which the clips 10,, 11 may then be inserted in thesocket-s .of the mandrel 5.

It is pointed out that it is within the contemplation of the inventionto utilize any shouder 9 may be secured in a vise ]aw in ferred tocomprising a solid cylindrical.

fixed relation whereupon the rotation of the work about the sleeve willsmooth the surface to be honed or dressed to the desired degree ofsmoothness.

Having described my invention, what I claim as new is:

1. An abrading tool of the character re-,

mandrel having reduced threaded portions at its opposite ends, thethreaded portion at one end merging with a shank, the shank having meansat its outer end of angular contour and adapted to be gripped by anextra-' neous object to rigidly secure said mandrel f thereto, saidmandrel formed with a 40 .axially thereof, a pair of resilient I drel,said air of circumferentially spaced sockets exten ing clipsfrictionally'supported in said sockets, an axially slotted. tubularsleeve mounted on the man slot registering with said pair of sockets, asheet of-abrading material C11- cumposed on said sleeve and having theside edges thereof trained through said slot and anchored'in saidclips,a pair of nuts mounted on the threaded portions of said mandrel inabutment with the ends of said sleeve for securing said sleeve to saidmandrel.

2. An abradingtool of the craracter referred to comprising. a solidcylindircal' tour and-adapted circumferentially spaced sockets mandrelhaving reduced threaded portions at-its o posite ends, the-threadedportion at one .en merging with a shank, the shank means at its outerend of angular conto be gripped by an extraidly secure saidmandrel relformed with a pair of extending axiall thereof, a pair of resilientclips friction'a; y supported in'said sockets, an axially Qhttediubularsleeve mounted onthe mandrel, said slot registering with said pair ofhaving neous object to ri thereto, said man mounted on the threadedportions of said mandrel in. abutment with the ends of said sleeve forsecuring said sleeve to said mandrel, said sockets and slot disposed 'atan angle with respect to the diameter of the mandrel.

3. An abrading tool of the character referred to comprising a solidcylindrical mandrel having reduced threaded portions at its oppositeends, the threaded portion at one end merging with a shank,.the shankhaving means at its outer end of angular contour and adapted to begripped by an extraneous object to rigidly secure said mandrel thereto,said mandrel formed with a pairof circumferentially spaced socketsextending axially thereof, a pair of resilient clips frictionally suported in said sockets, an axially slotted tubu ar sleeve mounted on themandrel, said slot registering with said pair of sockets,,'a sheet ofabrading material'circumposed on said sleeve and havin the side edgesthereof trained through said slot and anchored in said clips, 1 a pairof nuts mounted on the threaded portions of said mandrel in abutmentwith the ends of said sleeve for securing saidsleeve to saidmandrel,said sockets and slot disposed at an angle with respect to the diameterof the mandrel, said resilient cl 'ps being U-shaped having the ends ofthe sh t frictionally held between the legs.

4. An 'abrading tool of the character re= ferred to, comprising a solidcylindrical mandrel having reduced threaded portions at its oppositeends, the threaded portion at one end merging with a shank, theshankhaving means at its outer end of angular contour and adapted to begripped by an extraneous object to rigidly secure said mandrel thereto,said mandrel formed with a pair of circumferentially spaced socketsextending axially thereof, a pair of resilient clips frictionallysupported in said sockets, an axially slotted tu ular sleevemounted onthe mandrel, said said pair of sockets, a

slot registering with sheet of abrading material circumposed on saidsleeve and having the side edges thereof trained through said slot andanchored in i clips being U-shaped having the ends of the sheetfrictionally held between the legs, the leading corners onvsaid slotbeing rounded to prevent cutting of the abrading sheet.

In testimony whereof I. afiix my signature.

. JAMES E. SIMS.

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